TM 9-2320-365-20-3
CHAPTER 6
COOLING SYSTEM MAINTENANCE
RESTRICTED MAINTENANCE NOTICE
Units not authorized SC 4910-95-CL-A72 (SHOP EQUIPMENT, COMMON NO. 2) in their T.O.E. may
be unable to perform some of the maintenance tasks described in this chapter. If the required tools
are not authorized, the equipment must be submitted to DS Maintenance for repair.
Section I. INTRODUCTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Section II. MAINTENANCE PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6-2. RADIATOR/CHARGE AIR COOLER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6-3. RADIATOR OVERFLOW TANK AND BRACKET REPLACEMENT/REPAIR . . . . . . . . . . . . . . . . . . . . 6-7
6-4. RADIATOR FAN SHROUDS REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
6-5. THERMOSTAT REPLACEMENT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25
6-6. THERMOSTAT HOUSING REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28
6-7. COOLANT BYPASS TUBE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34
6-8. PERSONNEL HEATER HOSES REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-42
6-9. UPPER COOLANT TUBE AND HOSES REPLACEMENT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-49
6-10. LOWER COOLANT HOSE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-55
6-11. AIR COMPRESSOR INLET AND OUTLET COOLANT TUBES REPLACEMENT . . . . . . . . . . . . . . . 6-59
6-12. WATER PUMP AND FITTINGS REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-63
6-13. DRIVE BELT AND TENSION PULLEY REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-70
6-14. ENGINE FAN AND FAN CLUTCH ASSEMBLY REPLACEMENT
. . . . . . . . . . . . . . . . . . . . . . . . . . 6-74
Section I. INTRODUCTION
6-1. INTRODUCTION
This chapter contains maintenance instructions for replacing and repairing cooling system components authorized by
the Maintenance Allocation Chart (MAC) at the Unit Maintenance level.
Change 1
6-1
